package com.sky.handler;

import com.sky.constant.MessageConstant;
import com.sky.exception.BaseException;
import com.sky.result.Result;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.RestControllerAdvice;

import java.sql.SQLIntegrityConstraintViolationException;



/**
 * 全局异常处理器，处理项目中抛出的业务异常
 */
@RestControllerAdvice
@Slf4j
public class GlobalExceptionHandler {

    /**
     * 1.捕获业务异常
     *
     * @param ex
     * @return
     */
    @ExceptionHandler
    public Result exceptionHandler(BaseException ex) {
        log.error("异常信息：{}", ex.getMessage());
        return Result.error(ex.getMessage());
    }

    /**
     * 2.捕获sql异常
     */
    @ExceptionHandler
    public Result sqlExcreptionHandler(SQLIntegrityConstraintViolationException ex) {
       //获取异常信息
        String message =ex.getMessage();
        //判断异常信息中是否包含Duplicate entry，是的话就按空格把用户名截取，把用户名和提示信息拼接到msg，让Result统一提示到前端，否则返回未知错误
        if(message.contains("Duplicate entry")){
            String[] split = message.split(" ");
            String  username = split[2];
            String msg= username+ MessageConstant.ALREADY_EXISTS;
            return Result.error(msg);
        }else{
            return Result.error(MessageConstant.UNKNOWN_ERROR);
        }
    }
}
